Question

Four species are listed below:

$\left(i\right)HC{O}_3^{-}$
$\left(ii\right)H_3{O}^{+}$
$\left(iii\right)HS{O}_4^{-}$
$\left(iv\right)HS{O}_{3}F$

Which one of the following is the correct sequence of their acid strength?

• A. $\left(i\right)<\left(iii\right)<\left(ii\right)<\left(iv\right)$
• B. $\left(iii\right)<\left(i\right)<\left(iv\right)<\left(ii\right)$
• C. $\left(iv\right)<\left(ii\right)<\left(iii\right)<\left(i\right)$
• D. $\left(ii\right)<\left(iii\right)<\left(i\right)<\left(iv\right)$

Answer 1

The correct option is A

$\left(i\right)<\left(iii\right)<\left(ii\right)<\left(iv\right)$